Improvement in machines for making paper-board



UNITED STATES 'Y PATENT OFFICE.-

JOHNE. JONEs, OE ROCHESTER, NEW YORK.

IMPRhOVEMENT IN MACHINES FOR MAKING PAPER-BOARD.

Spcification forming part of Letters Patent No. 49,884, dated September12, 1865.

To all whom it may concern:

Be it known that I, JOHN FRANKLIN JONES, of Rochester, in the county ot'Monroe and State of New York, have invented certain new.

and useful Improvements in Maehineryrffor the Manufactureof Paper-Boardand I do hereby declare that the following. is a full and exactdescription thereof, reference being had to the accompanying drawings,making part of this specification. v

j-Fignre 1 is a plan of that portion of the machinery which forms theboard and the lirst77 and second press for pressing it; Fig. 2, acentral longitudinal vert-ical section of the machinery for forming theboard, a side elevation ofthe first and second press, and a longitudinalvertical section of the drying apparatus; Fig. '3, an enlargedcross-section of the decklebox and its connecting parts.

Like letters Of reference indicate corresponding parts inall'thefigures.

`The invention consists, first, in the employment of two endlesswire-mesh aprons, between which the pulp is pressedjsecond, intheconstruction'and arrangement of the swing-frame that supports the upperendless apron, and the adjustmentof the same; third, in the employmentof deckle-boxes of proper size and length on each side for the purposeof confining the pulp while being pressed between the aprons;

fourth, in the manner and means of holding in the decirle-straps ltotheir work within the deckle-boxes; fifth, in the arrangement of thecoucher, felt, first press, tank, and felt-beater, iu connection Vwiththe lower endless apron, for the purpose of carrying the web forward` tobe pressed without injury of wire or loss of pulp and, sixth, in theemployment of a steam table or tables for the purpose ot' properlydrying the web after it has left the drying-cylinders. The machinery onwhich the ground pulp is run to be pressed into board is mounted inl oneend of a frame, A, of any ,suitable con* struction. This machinery is onthe Fourdrinier plan, having the usual endless wire-cloth apron, B,passing from one end to the'other of the frame A around suitablerollers, C 1 ),and supported at the top by small rollers a a a,

l. passes around a Fig. 2, forming a bed for receiving the necessarypressure from above. I prefer to fill the spaces between the rollers aa. with strips b b' suicient to receive the necessary thickness of,

pulp to be pressed. into' board. This apron yseries of cylinders, G G G,&c., and rollers d d d, mounted in a swingframe, H, which consists of,swing-bars i t on each side,y turning on au axis, It, inclined aims Y ll,'jointed to sai-d bars at the top and 'inclining downward and outward,and connectingbars m m at the(bottom, which 'form the'support for-thecylinders G G.

The angle of the arms llwith the swingbars 'i i may be made more or lessobtuse by means of braces n n, having adjusting-holes o o, through whichand the arms passes a bolt, by which means not only is the wire apronmade taut 'or straight at any time, but' the parts are securely braced.The ends of the connecting-bars m m are also provided with adjustingslots or holes, so' as to compensate for the adjustment of the arms l l,and to ad- A Ijust up and down, if desired, independent of the rest ofthe frame.

The swing-frame H is suspended between two vertical standards, P P,extending upward from the main frame A, and made adjustable vertically,so as to separate the two aprons to a greater or less extent by anydesirable means.

The swing-barst' fand the standards P P may be connected byadjusting-braces or equivalents having a series of holes, through any ofwhich and the standards passes a bolt, by which means the frame H, andconsequently the upper apron, may be adjusted to any iin-.

clined position desired.

The cylinders G Gr G- perform the double function of that is, pressingthe pulp down to form the pressing and dipping cylinders sion. To thisendeach cylinder is hollow,

is covered either by a wire-cloth or by wgund v Ywhich dip up the 2 fmassarv .Y

f board and dipping up and discharging such water as rises above thepulp under compresi journals or bearings of the cylinder.

The upper wire apron is made somewhat narrower transversely than thelower one, and on each side of the latter rests a longitudinal box orinverted trough,'Q, usually extending the whole length (or a littlemore) of the upper" apron, the transverse space between the iboxes beingthat (or a little more) of the width of said upper apron, just so thatthe latter will run between them. These boxes I denominate thedecirle-boxes, as the ordinary decklebox,

strapsds s rurrthrough them from end to end, passing over pulleys t tinthe usual manner. These deckle-boxes or equivalents are absolutelyessential in the forming of paper-board by the machinery I amdescribing, as the pulp that is fed in at the induction end of themachine is several inches thick, and would otherwise escape laterally bythe compression, as' the deckle-strap itself is comparatively thin.' Thedeelde-boxes confine the pulp closely', sof

that'there can be no escape, while the decklestraps themselves, runninginside these boxes, are not subject to thelgreat pressure, and seryeonly to keep tight the joint or crack at the bottom ot' theboxes. l

In order .to keep the decirle-strap up close to its work, I employ asuitable number of rollers, wu, Fig. 3, pressing against its outer edge,.which rollers are adjustable out or in by means of a screw, fv, asshown, or insome equivalent manner. i j lar rollers on top thedeckle-strap within .the

- The operation vof this portion of the machine thus described isobvious. -The pulp -is fed in at the induction end,'and passes betweenthe two endless aprons B E, and is compressed between the cylindersandrollers 'Gr G a a..` The cylinders G G beingadjusted-in nan inclinedposition by means of the swing-frame H, the

- pulp is compressed thinner and thinner as it passes through. Theemployment of thedouble aprons instead of a single one, as in theordinary Fourdrinier machine, enables me to pro- Aduce any desiredthickness of board, and in a continuous or indefinite length, at oneoperal tion. vThe aprons confine the mass of thepulp and prevent theollers interfering with the web. lIt is obvio t that by raising orlowering theswing-fra e, and consequently the upper endless'apron, thickor thin board may be formed at pleasure. I am aware of no device wheredouble aprons vare employed for this purpose having the vertical andangular adjustments set forth. Such are necessary in forming thickpaper-board on the ordinary Fourdrinier plan, as by the use of a singleIt may also be desirable to use simito hold the said strap down to itswork.

apron nothing `more substantial than thick paper can be made. A s thepulp is compressed between the endless aprons such water as rises above,between the deckel-boxes, is dipped up anddischarged by the cylindersGr, as before described; but most of the expressed water falls lbetweenthe rollers a a and into the ordinary trough or receptacle, R,below,whence it escapes in the usual manner.

The web or layer of4 board mfformed by the,

apparatus above described passes forward to the roller D, where it istaken off from the wire by the following means: At a suitable position"tobear directly against the face of the roller D (and not. compress orsag the apron) is a coucher, T, Fig. 2. This coucher is made soft bycovering it with sponge, felt, or any equivl alent material. Around thiscoucher passes a felt, y, upward and forward, iu an inclined position,between the tlrst press, consisting of large rollers U U, and downwardinto a washtank, V, where it is'cleaned by the ordinary felt-beater, W,thence upward around suitable rollers, and then down to the coucheragain. Theweb'ot' board, adhering to this felt, passes up, as indicatedby dotted lines, between the first press U U, where the upper rollertakes it olif, and it is carried over a roller, e, thence down betweenthe second' press, consisting of rollers Z Z, similar to the/firstpress. VA felt, f, runs between the second press, passing around asystem of rolls, gg, as. clearly represented in Fig. 2. y Y

. There are several advantages in the arrangement of the first. andsecond press as above described. l The web is carried forwardcoustantly, instead'of being carried backward over the machiueas in someother arrangements, and therefore the endless aprons are not ob.

structed, but are easily accessible to the operator at all times andunder all circumstances. By going forward the web is also formed moreperfectly and without breakage. There is also a great Savin g of pulp,which in ordinary-'machines escapes around the rollerD, the coucher TinI this case pressing directly against the roller insuch a manner asnot to' sag or depressV the apron, but to take the web therefrom withoutbreaking it or. leaving any material portion of the pulp. By thisarrangement, also, the felty takes the web directly from the wire'andcarries it upward to the iirst press, whereas-in ordinary machines it isnecessary to transfer the web at the commencement, by hand, from theroller, I) to an independent felt, by which it is carried to thepressing-rollers. ,In my device, also, the first press gives theback-pressure, or the pressure to the under side ofthe web, first, thusreversing the action. This in itself is not material; but the advantageconsists .in carrying the web over and downward to ,the 'second'pressinstead of underand backward, as in ordinary machines, in`doingwhich it is necessary to transfer first by hand, and then the gravity ofthe web itunser A a frequently break it. In my arrangement the supportis under the web. This arrangement of the first and second press is alsoparticularly applicable to paper-making.

Fronti the second press Z Z the the web-w passes to the dryingapparatus, which forms a direct continuation ot' the machine abovedescribed, but is represented at the left hand of the drawings, in Fig.2, as there is not sufiicient space to extend it. A series ot ordinarydrying-cylinders, Il, in sutablenumbers, is cnrploycd,(fonr only beingshown,) of ordinary construction. The web passes between thesecylinders, and calender-rollers K K are employed above the uppercylinders for the purpose ot' pressing. From the drying-cylinders theweb passes between calen der-rollers L L, and thence over astean1-table,N,of suitable extent, which -is made hollow for the purposeor admitting steam., and is of sufficient width to correspond with thatot' the web itself. Above the steamtable is arranged a series ofcalender-rollers, U which press the web closely upon the greater thanthe motion of the web under them serre to smooth and glaze thesurface/ot the web. The web, by being thus pressed closely' upon thesteam-table, receives the heat overa great surface at once, which driesit very eid'ectnally and expeditiously, and makes it stihland hrm,'andrenders the same fit for cutting intov sheets.

After leaving the steam-table above described, ll prefer, especially informing paperboard, to pass the web through another pair et'calender-rollers, L2 L2, and over a second steam-table similar tothefrst; `and the process may be carried still further,-if desirerhandadditional steam-tables eniployed; but two will be generally foundsufiicient under ordinary f circumstances. After passing thesteam-tables the web will be in the proper condition to be cut intosheets, and it is onlynecessary to pass it through the proper cuttingapparatus..

What ll claim as my invention is l. Thecolnbination of two wire-meshaprons, B E, between which the pulp passes, with suitablepressnre-rollers, GG u u, or equivalent, for forming board inacontinuous or indefinite length.

2. The construction and arrangement et' the traine El, made up of theparts and adjusted in the manner hereinbefore set forth, and used inconnection withthe endless apron E and cylinders@ Gr, substantially asand for the purpose herein specified.

3. The 'dechle-boxes Q -Q,`in combination with the endless aprons B E,substantially as and for the purpose herein set forth. l,

d. The, employment of the adjustable rollers fr, in combination with thedechire-straps s s steam-table, and by having a. revolving motion' andbones Q Q, for the purpose ot' holding said straps to their work,substantially as described.

5. The arrangement ofi' the sot't coucher T. felt y, nrst press U U,wash-tank V, and t'eltbeater lll/T, used inv connection with the endlessapron B and roller D in such a manner as to taire the web from the saidapronand convey it upward to the press without injury or loss yot' pulp,substantially as hiereiuset forth.

/ .ronn n.. Jones.

lt. lE. (racoon, J. Hunan..

